39384948409 has 2 divisors, whose sum is σ = 39384948410. Its totient is φ = 39384948408.

The previous prime is 39384948389. The next prime is 39384948431. The reversal of 39384948409 is 90484948393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30713614009 + 8671334400 = 175253^2 + 93120^2 .

It is a cyclic number.

It is not a de Polignac number, because 39384948409 - 2²³ = 39376559801 is a prime.

It is a super-2 number, since 2×39384948409² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39384948709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19692474204 + 19692474205.

It is an arithmetic number, because the mean of its divisors is an integer number (19692474205).

Almost surely, 2^39384948409 is an apocalyptic number.

It is an amenable number.

39384948409 is a deficient number, since it is larger than the sum of its proper divisors (1).

39384948409 is an equidigital number, since it uses as much as digits as its factorization.

39384948409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 39384948409 in words is "thirty-nine billion, three hundred eighty-four million, nine hundred forty-eight thousand, four hundred nine".